Cholinergic urticaria: Understanding a condition that causes itchy hives during exercise or heat exposure. The condition is caused by the release of histamine due to abnormal interaction between acetylcholine and mast cells.
Symptoms include itchy hives that appear on the trunk and can be accompanied by chest tightness, dizziness, and abdominal pain. While the condition cannot be cured, symptoms can be managed through avoidance of triggers and the use of antihistamine medication.
It’s important to stay cool and avoid strenuous exercise or stressful situations.